[MPlayer-DOCS] CVS: main/DOCS/man/en mplayer.1,1.813,1.814

D Richard Felker III dalias at aerifal.cx
Fri Dec 3 23:37:37 CET 2004


On Wed, Dec 01, 2004 at 06:09:09PM +0100, Reimar Döffinger wrote:
> Hi,
> > > @@ -682,6 +682,8 @@
> > >  .B \-sstep <sec>
> > >  Display one frame every <sec> seconds.
> > >  Useful for slideshows.
> > > +This uses normal seeking, and thus is just as inexact (i.e. with most formats
> > > +you will get one frame between every <sec> and <sec> + 120 seconds).
> > 
> > 120 sec is 2 minutes. Is -sstep really that inacurate?
> 
> Well, I guess I should have written "with some files" instead of "with
> most formats". But yes, you usually can seek only to keyframes and e.g. with many
> DivX files I have they are sometimes 2 mins or further apart (maybe those are bad encodes
> but still).

this is nonsense, i've never seen keyframes more than 20 seconds or so
apart, and even that's extreme. imo you're thinking 120 _seconds_
instead of 120 _frames_ (which is a common minimal keyframe interval;
typical is 250-300).

rich




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